Home / 862-1,293-254

Finding the Fourth Proportional to 862, 1,293 and 254

Calculator

Solution

The fourth proportional to 862, 1,293 and 254 is: 381

Step by Step Solution

  1. Step 1: Write the proportion equation
    862 : 1,293 = 254 : x
  2. Step 2: Convert to fraction form
    862/1,293 = 254/x
  3. Step 3: Cross multiply
    862x = 1,293 × 254
  4. Step 4: Simplify right side
    862x = 328,422
  5. Step 5: Solve for x
    x = 328,422/862
  6. Step 6: Final answer
    x = 381

Related Problems

Find fourth proportional to 431, 646.50 and 127
Half scale
Find fourth proportional to 1,724, 2,586 and 508
Double scale
Find fourth proportional to 863, 1,294.50 and 255
Similar ratio
Find fourth proportional to 1,293, 1,939.50 and 381
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.